1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ratling [72]
2 years ago
12

What is the approximate percentage of nitrogen in the Earth's current atmosphere?

Chemistry
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

78% nitrogen

Explanation:

It has been long agreed upon that our atmosphere is highly abundant with nitrogen. Our atmosphere is composed of  78% nitrogen and then other gases follow such as 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements.

You might be interested in
Always carry the microscope with________________-one on the ____________ and one underneath the____________ of the microscope
Ronch [10]

Answer:

Always carry the microscope with two hands. One on the arm and one underneath the base of the microscope.

5 0
3 years ago
How many grams of water are theoretically produced for the following reaction given we have 2.6 moles of HCl and 1.4 moles of Ca
leva [86]

Answer:

The answer to your question is: 6.8 g of water

Explanation:

Data

2.6 moles of HCl

1.4 moles of Ca(OH)2

                           2HCl     +     Ca(OH)2    →        2H2O    +      CaCl2

MW                   2(36.5)               74                       36 g               111 g

                          73g                

                            1 mol of HCl ----------------  36.5 g

                           2.6 mol           --------------    x

                              x = (2.6 x 36.5) / 1   = 94.9 g

                           1 mol of Ca(OH)2 --------------   74 g

                         1.4 mol                  ---------------   x

                            x = (1.4 x 74) / 1  = 103.6 g

Grams of water

                        73 g of HCl ------------------   36g of H2O

                        94.9 g        -------------------    x

                     x = (94.9 x 36) / 73 = 46.8 g of water

6 0
2 years ago
MARKING BRAINLIEST!! HURRY
Anastaziya [24]

Answer:

3rd choice

Explanation:

7 0
2 years ago
Read 2 more answers
What is the chemical formula for the compound magnesium perchlorate? Use the list of polyatomic ions and the periodic table to h
8_murik_8 [283]

The chemical formula for the compound magnesium perchlorate is Mg(ClO₄)₂

Magnesium perchlorate or Mg(ClO₄)₂ is an ionic compound.

Perchlorate here is an anion which is represented by ClO₄⁻. Perchlorate is a polyatiomic anion, where one Cl atom is bonded to four O atoms.

The magnesium cation is represented by Mg²⁺

So one Mg²⁺ cation combines with two ClO₄⁻ anion to form one molecule of Mg(ClO₄)₂


6 0
2 years ago
Choose the more reactive metal Te or O
kvasek [131]

Te is the answer between the two

8 0
3 years ago
Read 2 more answers
Other questions:
  • How do an ionic bond and a covalent bond differ?
    11·2 answers
  • A chemistry student weighs out 0.154 g of chloroacetic acid (HCH2CICO2) into a 250. mL volumetric flask and dilutes to the mark
    9·1 answer
  • 1. For dry air at 1.0000 atm pressure, the densities at –50°C, 0°C, and 69°C are 1.5826 g dm–3 , 1.2929 g dm–3, and 1.0322 g dm–
    10·1 answer
  • How is electrical energy used?
    10·2 answers
  • If the pressure of a gas is 2.42 atm, what is its pressure in kPa?
    5·2 answers
  • A chemist must dilute 61.9 mL of 548. nM aqueous sodium carbonate (Na2CO3) solution until the concentration falls to 484. nM . H
    12·1 answer
  • (12pts) Separation of Copper(II) and Bismuth(III) Ions Procedure Number and Ion Test Reagent or Technique Evidence of Chemical C
    9·1 answer
  • A sample of methane occupies a volume of 370.0 ml at 25 oC and exerts a pressure of 1020 mm Hg. If the volume is allowed to expa
    6·1 answer
  • does anyone know the three answers Question 1 which element is in group 5 period 2?, question 3 which element is in group 6 peri
    12·2 answers
  • An ideal gas exerts a pressure of 3atm in a 3L container. The container is at a temperature of 298K.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!